Dodge Repair Questions? Ask a Mechanic for Answers ASAP
The P0720 is for a fault in the output shaft speed sensor. You could try replacing the speed sensor and see if it goes away, but it could also be a problem in the Transmission control module. It wouldn't be a bad idea to try the speed sensor first though. If you plan to change it yourself I can send a diagram showing it's location if you would like.
The p0731 and p0700 just point back to the P0720 code. They don't really mean anything other than to confirm that the speed sensor signal is causing shift problems.
Here is a picture of the output shaft speed sensor.
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